METHOD TO PRODUCE METHANE AND ITS DERIVANTS Russian patent published in 2003 - IPC

FIELD: chemical industry; production of methane and its derivants. SUBSTANCE: invention relates to production of hydrocarbons using the following method: 10-80 % water solution of heteropolyacid of 2-18 row H₆[P₂W₁₈O₆₂] is heat up to temperature 70-140 C. Then a leaden or copper plate is dipped in the solution and after 3-15 minutes the process of regeneration of an anionic complex [P₂W₁₈O₆₂]^6- shall begin. After that a gas mixture with concentration of hydrocarbon of no more than 60 vol.% and concentration of oxygen of no less then 5 vol.% is passing through the solution under pressure of 700-800 mmHg till production of methane or one of saturated hydrocarbons. EFFECT: production of methane from carbon dioxide in industrial volumes.